EP 3859037 A4 20210915 - NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Title (en)
NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Title (de)
NICHTAUSGERICHTETES ELEKTROSTAHLBLECH UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D'ACIER ÉLECTRIQUE À GRAINS NON ORIENTÉS ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20180115276 A 20180927
- KR 2019012630 W 20190927
Abstract (en)
[origin: EP3859037A1] The present invention relates to a non-grain-oriented electrical steel sheet which is excellent in high-frequency iron loss, and a manufacturing method thereof.A non-grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes 2.5 to 3.8 wt% of Si, 0.5 to 2.5 wt% of Al, 0.2 to 4.5 wt% of Mn, 0.0005 to 0.02 wt% of As, 0.0005 to 0.01 wt% of Bi, the balance Fe, and inevitable impurities, and satisfies the following [Equation 1]. 0.3≤surfacefinecrystalgraindiameter×finegrainformationthickness×As/Bi≤5.0In Equation 1, [surface fine crystal grain diameter] means an average particle diameter (µm) of fine crystal grains in an electrode surface layer of an electrical steel sheet, [fine grain formation thickness] means a thickness (mm) of an electrode surface layer in which fine crystal grains are formed, and [As] and [Bi] mean a composition (wt%) of As and a composition (wt%) of Bi, respectively.
IPC 8 full level
C22C 38/02 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); H01F 1/147 (2006.01)
CPC (source: EP KR US)
C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - EP US); C21D 8/1222 (2013.01 - KR US); C21D 8/1233 (2013.01 - KR US); C21D 8/1244 (2013.01 - KR); C21D 8/1272 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/12 (2013.01 - EP KR); C22C 38/14 (2013.01 - EP KR); H01F 1/147 (2013.01 - US); H01F 1/14791 (2013.01 - EP KR); H01F 1/16 (2013.01 - EP); C21D 2201/05 (2013.01 - US); C22C 2202/02 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3859037 A1 20210804; EP 3859037 A4 20210915; CN 113166873 A 20210723; CN 113166873 B 20230526; JP 2022502572 A 20220111; JP 7445651 B2 20240307; KR 102105530 B1 20200428; KR 20200035761 A 20200406; US 2021355558 A1 20211118; WO 2020067794 A1 20200402
DOCDB simple family (application)
EP 19865506 A 20190927; CN 201980078372 A 20190927; JP 2021517326 A 20190927; KR 20180115276 A 20180927; KR 2019012630 W 20190927; US 201917280474 A 20190927